Zaheduzzaman Sarker has entered the following ballot position for
draft-ietf-alto-performance-metrics-20: Discuss

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DISCUSS:
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I perhaps understand the intention of extending the ALTO protocol so that the
ALTO client and server have defined way of exchanging values for already
defined metrics. However, I need to agree with my fellow AD colleagues that
this document need to describe why those metrics are needed and describe the
relationship with other RFCs those defines those metrics mostly for other
contexts. To that end all the RFCs in the Table 1 in section 1 need to be
normative references.


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COMMENT:
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Thanks for the work on this document and thanks to Brian Trammell for his
TSVART early review.

I have following comments which I believe will improve the document quality -

1. In the abstract I read about "a better delay performance" and was hoping it
will be clear to me what is "a better delay performance". Unfortunately, I was
unable to get that. This comes to the point that this document needs to
describe why purpose of using the defined metrics well.

2. Section 2.2 says

    The number MUST be a non-negative JSON integer in the range [0, 100] (i.e.,
    greater than or equal to 0 and less than or equal to 100), followed by an
    optional decimal part, if a higher precision is needed.

  This should be a JSON number type not integer type.

3. There are number of broken JSON examples. for example, in section 4.2.3
    "ipv4:192.0.2.2" {
      "ipv4:192.0.2.89" :    0,
      "ipv4:198.51.100.34": 2000
    }
   missing ":" after  ipv4:192.0.2.2

4. Content-Length: TBA in the examples, I actually don't know how to interpret
it.



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